星街すいせい(旧衣装)
The original costumes of hololive's Hoshimachi Suisei during her indie, INNK Music, and early hololive days. Worth noting is that her original outfits were designed by Suisei herself.
One of these costumes would go on to inspire her SuperNova 3D solo live concert costume.
This tag implicates hoshimachi_suisei (learn more).
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